Masaru — boys' name

What the Data Says About Masaru

The Social Security Administration has registered 447 babies named Masaru between 1912 and 1992, spanning 81 consecutive years of U.S. birth records. As a boy's name, Masaru currently falls outside the top 1,000 boys' names for 1992. The name reached its historical peak in 1917, when 31 babies received it in a single year.

Decade-level aggregation shows that Masaru performed strongest in the 1920s, accumulating 245 births during that ten-year window. Across the 5 decades of recorded activity, Masaru shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Hawaii, which accounts for 230 births — the largest state-level total in the dataset — followed by California. In total, SSA state-level files list Masaru in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Masaru in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 447 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.